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Bill Zierolf is an experienced sales leader with a diverse background in driving revenue growth and advancing digital transformations across multiple industries. Currently serving as the Sales Director for North America at Circulor, Bill focuses on enabling companies to enhance their supply chain visibility and improve ESG performance. Prior roles include Business Development Lead at Hitachi, Enterprise Sales Director at Syniverse, and Regional Sales Director at Thryv, where Bill successfully implemented SaaS solutions and drove significant profitability for clients. As Director of Sales at Dun & Bradstreet, Bill managed a team that increased sales by 25% in a competitive market. Additionally, Bill held the positions of President/CEO at Management Health Solutions and True Advantage, where substantial revenue growth was achieved. Bill Zierolf holds a BA in Business Administration and Communications from Wittenberg University.